Helm is a package manager that allows you to easily install and manage Elasticsearch in a Kubernetes cluster. You can define your Elasticsearch configurations in a YAML file and use Helm to deploy your applications in a version-controlled and reproducible way.
The Helm chart contains the resources described in the following table.
| ||Information about the chart.|
| ||Default configuration values for the chart.|
| ||Templates that combine with values to generate the Kubernetes manifest files.|
The specification in the default Helm chart supports many standard use cases and setups. You can modify the default chart to configure your desired specifications and set Transport Layer Security (TLS) and role-based access control (RBAC).
For information about the default configuration, steps to configure security, and configurable parameters, see the README.
The instructions here assume you have a Kubernetes cluster with Helm preinstalled. See the Kubernetes documentation for steps to configure a Kubernetes cluster and the Helm documentation to install Helm.
Install using Helm
Clone the opendistro-build repository:
git clone https://github.com/opendistro-for-elasticsearch/opendistro-build
You can use the release tag (e.g.
v1.8.0) to get the specific Open Distro for Elasticsearch version.
Change to the
Package the Helm chart:
helm package .
helm install —generate-name opendistro-es-1.9.0.tgz
The output shows you the specifications instantiated from the install. To customize the deployment, pass in the values that you want to override with a custom YAML file:
helm install --values=customevalues.yaml opendistro-es-1.9.0.tgz
NAME: opendistro-es LAST DEPLOYED: Fri Jan 17 14:44:19 2020 NAMESPACE: default STATUS: deployed REVISION: 1 TEST SUITE: None
To make sure your Elasticsearch pod is up and running, run the following command:
$ kubectl get pods NAME READY STATUS RESTARTS AGE opendistro-es-client-988fb9fbf-ph8f 1/1 Running 0 3m30s opendistro-es-data-0 1/1 Running 0 3m30s opendistro-es-kibana-786f547486-75gw4 1/1 Running 0 3m31s opendistro-es-master-0 1/1 Running 0 3m30s
To access the Elasticsearch shell:
$ kubectl exec -it opendistro-es-master-1 -- /bin/bash
You can send requests to the pod to verify that Elasticsearch is up and running:
$ curl -XGET https://localhost:9200 -u admin:admin --insecure
To set up port forwarding to access Kibana, exit the Elasticsearch shell and run the following command:
$ kubectl port-forward deployment/opendistro-es-kibana 5601
You can now access Kibana from your browser at: http://localhost:5601.
Uninstall using Helm
To delete or uninstall this deployment, run the following command:
helm delete opendistro-es